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H. SEIFFERT. STEAM GENERATOR. v

Patented Mar. 31 1896.

I (No Model.)

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\ UNITED STATES PATENT OFFICE.

HERMANN SEIFFERT, OF HALLE-ON-THE-SAALE, GERMANY.

STEAM-G ENERATO R.

SPECIFICATION forming part of Letters Patent No. 557,156, dated March 311896.

Application filed October 14,1895. Berial No. 565,555. (No model.)

To all whom it may concern:

Be itknown that I, HERMANN SEIFFERT, a subject of the King of Prussia,Emperor of Germany, and a resident of I-Ialle-on-the-Saale, in Saxony,Kingdom of Prussia, Germany, have invented a certain new and usefulImprovement in the Processes of Generating Dry Steam and ApparatusTherefor, of which the following is a clear and full specification.

My invention comprises a steam-generator in which a vaporizer-chamber isconnected with a conical tube extending through a water-chamber abovethe furnace, into which tube a spray of Water is thrown from a spraydevice, so that steam will be generated in the shortest possible time.

In the drawings, Figure 1 is a vertical section through the apparatus.Fig. 2 is a horizontal section taken in a plane above the vaporizer andwater chambers, and Fig. 3 is a view of a detail.

The furnace F is submerged in the waterchamber of the furnace, and thewater extends over, under, and at the back of the flame-tube extendingfrom this furnace. The outlet D from the flame-tube is directed downwardinto the space between the water-chamber and the outer walls of thefurnace, so that the smoke passes entirely around the waterchamber toheat the same, as indicated by the arrows in full and dotted lines.Abutting against the rear end of the water-chamber there is avaporizer-chamber H, and from this chamber superheatcr pipes G extendupwardly and connect at their upper ends with the steam-dome J. Thepipes G have shafts or posts L extending through them, having a spiralrib or blade extending about the same which compels the steam, in risingfrom the chamber H, to take a circuitous course and thus remain longerin the tubes G, which tubes are subjected to the direct action of thesmoke and heated gases passing through the flue R, over the wall B,through the space E, among the pipes G, thence about the chamber H, andout at the discharge-pipe X. I

The chamber H connects with the steamspace of the water-chamber throughthe opening N of the wall N, and it connects also with the conical tubeA B, which extends from steam entering the chamber H from thewaterchamber through the openings N.

I claim 1. A steam-boiler comprising a furnace, a vaporizing chamber H,a water chamber above the fire-chamber and a conical tube A extendingthrough the same and connecting with the vaporizing-chamber, and thespray device directed into the conical tube, substantially as described.

2. A steam-boiler comprising a furnace, a Water-chamber above the same,a vaporizingchamber H in rear of the water-chamber, a tube A, B,extending through the water-space to the vaporizing-chamber, a spraydevice connected with the tube A, B, the pipe system G extending up fromthe vaporizing-chamber and the steam-dome above the pipe system, saidwater-chamber, the vaporizing-chamber and pipe system being subjected tothe heat of the furnace, substantially as described.

3. In combination in a furnace, the vaporizing-chamber, the furnace, thewater-chamber and the pipe system connected with the vaporizing-chamberand made up of the outer tubes and the inner spirals, substantially asdescribed.

4. In combination, the water-chamber, the vaporizer-chamber in rearthereof, the furnace and flame-tube F extending longitudinally withinthe water-chamber, the vaporizer-tube A, B, extending through thewaterchamber above the flame-tube and connecting with thevaporizer-chamber and the spray device at the front end of the tube,substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

HERMANN SEIFFERT. Witnesses:

CONSTANTIN MUNDELIUS, WM. HAUPT.

